High-order harmonics q(ψ_(s))=1 energetic particle modes(EPMs)have been observed in toroidal plasmas experiments with neutral beam injection.To investigate these phenomena,linear properties and nonlinear dynamics of ...High-order harmonics q(ψ_(s))=1 energetic particle modes(EPMs)have been observed in toroidal plasmas experiments with neutral beam injection.To investigate these phenomena,linear properties and nonlinear dynamics of these EPMs driven by passing energetic particles(EPs)are studied via the global hybrid kinetic-magnetohydrodynamic code M3D-K.Simulation results demonstrate that passing EPs'effects on high mode-number harmonics(q(ψ_(s))=m/n=2/2,3/3,4/4)instability are more obvious than the q(ψ_(s))=1/1 mode,especially when q-profile is sufficiently flat in the core region.Furthermore,the effects of the pitch angleΛ_0 and beam ion pressure P_(hot)/P_(total)on the features of high n components are also analyzed specifically.It is found that there exists only one resonant condition for these EPMs.In the nonlinear phase,these high mode-number harmonics can induce significant energetic ions redistribution and chirping up phenomena,which differs from the classical fishbone excited by passing EPs.These discoveries are conducive to better apprehend the underlying physical mechanisms of the highorder harmonics driven by passing EPs.展开更多
The tokamak simulation code （TSC） is employed to simulate the complete evolution of a disruptive discharge in the experimental advanced superconducting tokamak. The multiplication factor of the anomalous transport c...The tokamak simulation code （TSC） is employed to simulate the complete evolution of a disruptive discharge in the experimental advanced superconducting tokamak. The multiplication factor of the anomalous transport coefficient was adjusted to model the major disruptive discharge with double-null divertor configuration based on shot 61 916. The real-time feed-back control system for the plasma displacement was employed. Modeling results of the evolution of the poloidal field coil currents, the plasma current, the major radius, the plasma configuration all show agreement with experimental measurements. Results from the simulation show that during disruption, heat flux about 8 MW m-2 flows to the upper divertor target plate and about 6 MW m-2 flows to the lower divertor target plate. Computations predict that different amounts of heat fluxes on the divertor target plate could result by adjusting the multiplication factor of the anomalous transport coefficient. This shows that TSC has high flexibility and predictability.展开更多
To explore the evolutionary relationships of Noctuoidea, the complete mitochondrial genome of Lemyra melli （Daniel） was sequenced and annotated. It was 15 418 bp in size, including 37 genes and one AT-rich region. T...To explore the evolutionary relationships of Noctuoidea, the complete mitochondrial genome of Lemyra melli （Daniel） was sequenced and annotated. It was 15 418 bp in size, including 37 genes and one AT-rich region. The nucleotide composition was biased towards A＋T （78.67%）. Most of the protein-coding genes are initiated by typical ATN codons, except for coxI, which uses a CGA. Nine are terminated with TAA or TAG, whereas four genes, cox1, cox11, nad4 and nad6, harbor incomplete termination codons of a single T. All of the tRNA genes have the typical clover-leaf structure, except trnS （AGN）. The A＋T-rich region is 338 bp, with a 93.38% AT content and several conserved structures, including a ATAGA ＋ poly T stretch, ATTTA ＋ （AT）n, a poly（A）, stem-and-loop structure with 5＇ flanking ＂TATA＂ and 3＇ flanking ＂GAAT＂ motifs and tandem-repeated elements. The phylogenetic relationship among the superfamily Noctuoidea is [Notodontidae ＋ （Erebidae ＋ （Nolidae ＋ （Euteliidae ＋ Noctuidae）））], and inside family Erebidae is [Arctiinae ＋ （Aganainae ＋ Lymantriidae）].展开更多
OBJECTIVE:To explore factors influencing the curative effect of scraping therapies (at acupoints or along channels) and to determine the relationship of scraping site and strength to curative effect. METHODS: Two hund...OBJECTIVE:To explore factors influencing the curative effect of scraping therapies (at acupoints or along channels) and to determine the relationship of scraping site and strength to curative effect. METHODS: Two hundred and ten patients with lumbar muscle strain were divided into five groups with 42 patients each.The "scraping therapy at acupoint until appearance of skin eruptions" and "scraping therapy along channel until appearance of skin eruptions" groups were treated with a 4-daycourse. The "scraping therapy at acupoint without appearance of skin eruptions", "scraping therapy along channel without appearance of skin eruptions", and acupuncture groups were treated with a 2-day course.The five groups were treated with seven courses. The visual analog scale (VAS), oswestry disability index (ODI), and lumbago scores were recorded in the five groups before treatment, after each treatment, and in follow-up visits one month and three months after treatment. RESULTS: VAS, ODI, and lumbago scores after treatment improved in the five groups (P<0.01). There was a statistical difference (P<0.01) in the change of VAS scores by appearance of skin eruptions and scraping site. CONCLUSION: Scraping therapy can effectively alleviate lumbago symptoms. The appearance of skin eruptions and scraping therapy along channels can enhance the curative effect of scraping therapy.展开更多
Dissolutive wetting, i.e., droplet wetting on dissolvable surfaces, is essential for various natural phenomena and industrial applications such as the formation of sinkholes, enhancing shale gas recovery, drug design,...Dissolutive wetting, i.e., droplet wetting on dissolvable surfaces, is essential for various natural phenomena and industrial applications such as the formation of sinkholes, enhancing shale gas recovery, drug design, MEMS, and so on. It is difficult to predict the evolution of concentration field and solid-liquid interface owing to the coupled effects of wetting, diffusion, and convection. This study makes substantial progress by proposing a new theory based on Onsager’s variational principle and finding two modes of solute transport, i.e., shifting and lifting modes. Furthermore, we investigate the influence of wetting and dissolution coupling on the interface shape using a phase diagram. Using our theory, we can predict and inversely predict the interface evolution.展开更多
基金supported by National Key R&D Program of China(Nos.2019YFE03050002,2018YFE0310400,and 2022YFE03040002)National Natural Science Foundation of China(Nos.12005003 and 11975270)Science Foundation of Institute of Plasma Physics,Chinese Academy of Sciences(No.DSJJ-2022-04)。
文摘High-order harmonics q(ψ_(s))=1 energetic particle modes(EPMs)have been observed in toroidal plasmas experiments with neutral beam injection.To investigate these phenomena,linear properties and nonlinear dynamics of these EPMs driven by passing energetic particles(EPs)are studied via the global hybrid kinetic-magnetohydrodynamic code M3D-K.Simulation results demonstrate that passing EPs'effects on high mode-number harmonics(q(ψ_(s))=m/n=2/2,3/3,4/4)instability are more obvious than the q(ψ_(s))=1/1 mode,especially when q-profile is sufficiently flat in the core region.Furthermore,the effects of the pitch angleΛ_0 and beam ion pressure P_(hot)/P_(total)on the features of high n components are also analyzed specifically.It is found that there exists only one resonant condition for these EPMs.In the nonlinear phase,these high mode-number harmonics can induce significant energetic ions redistribution and chirping up phenomena,which differs from the classical fishbone excited by passing EPs.These discoveries are conducive to better apprehend the underlying physical mechanisms of the highorder harmonics driven by passing EPs.
基金supported by National Natural Science Foundation of China(Grant Nos.11505290,51576208 and11575239)the National Magnetic Confinement Fusion Science Program of China(No.2015GB102004)
文摘The tokamak simulation code （TSC） is employed to simulate the complete evolution of a disruptive discharge in the experimental advanced superconducting tokamak. The multiplication factor of the anomalous transport coefficient was adjusted to model the major disruptive discharge with double-null divertor configuration based on shot 61 916. The real-time feed-back control system for the plasma displacement was employed. Modeling results of the evolution of the poloidal field coil currents, the plasma current, the major radius, the plasma configuration all show agreement with experimental measurements. Results from the simulation show that during disruption, heat flux about 8 MW m-2 flows to the upper divertor target plate and about 6 MW m-2 flows to the lower divertor target plate. Computations predict that different amounts of heat fluxes on the divertor target plate could result by adjusting the multiplication factor of the anomalous transport coefficient. This shows that TSC has high flexibility and predictability.
基金provided jointly by the Youth Science&Technology New Star Program(2013KJXX-96)the Educational Commission of Shaanxi Province of China(14JS003)
文摘To explore the evolutionary relationships of Noctuoidea, the complete mitochondrial genome of Lemyra melli （Daniel） was sequenced and annotated. It was 15 418 bp in size, including 37 genes and one AT-rich region. The nucleotide composition was biased towards A＋T （78.67%）. Most of the protein-coding genes are initiated by typical ATN codons, except for coxI, which uses a CGA. Nine are terminated with TAA or TAG, whereas four genes, cox1, cox11, nad4 and nad6, harbor incomplete termination codons of a single T. All of the tRNA genes have the typical clover-leaf structure, except trnS （AGN）. The A＋T-rich region is 338 bp, with a 93.38% AT content and several conserved structures, including a ATAGA ＋ poly T stretch, ATTTA ＋ （AT）n, a poly（A）, stem-and-loop structure with 5＇ flanking ＂TATA＂ and 3＇ flanking ＂GAAT＂ motifs and tandem-repeated elements. The phylogenetic relationship among the superfamily Noctuoidea is [Notodontidae ＋ （Erebidae ＋ （Nolidae ＋ （Euteliidae ＋ Noctuidae）））], and inside family Erebidae is [Arctiinae ＋ （Aganainae ＋ Lymantriidae）].
基金Supported by National Sci-tech Project in "the 11th Five-year Plan": Standardized Research into Treatment of Lumbago with Reinforcing and Reducing Methods of Scraping Therapy(2008 BAI53B063)National Natural Science Foundation Project: Research into Biological Effect and Mechanism of Scraping Manipulations(81173346)
文摘OBJECTIVE:To explore factors influencing the curative effect of scraping therapies (at acupoints or along channels) and to determine the relationship of scraping site and strength to curative effect. METHODS: Two hundred and ten patients with lumbar muscle strain were divided into five groups with 42 patients each.The "scraping therapy at acupoint until appearance of skin eruptions" and "scraping therapy along channel until appearance of skin eruptions" groups were treated with a 4-daycourse. The "scraping therapy at acupoint without appearance of skin eruptions", "scraping therapy along channel without appearance of skin eruptions", and acupuncture groups were treated with a 2-day course.The five groups were treated with seven courses. The visual analog scale (VAS), oswestry disability index (ODI), and lumbago scores were recorded in the five groups before treatment, after each treatment, and in follow-up visits one month and three months after treatment. RESULTS: VAS, ODI, and lumbago scores after treatment improved in the five groups (P<0.01). There was a statistical difference (P<0.01) in the change of VAS scores by appearance of skin eruptions and scraping site. CONCLUSION: Scraping therapy can effectively alleviate lumbago symptoms. The appearance of skin eruptions and scraping therapy along channels can enhance the curative effect of scraping therapy.
基金supported by the National Natural Science Foundation of China(Grant Nos.11722223,11672300,11872363,and 51861145314)the Chinese Academy of Sciences(CAS)Key Research Program of Frontier Sciences(Grant No.QYZDJ-SSW-JSC019)+1 种基金the Strategic Priority Research Program of the Chinese Academy of Sciences(Grant No.XDB22040401)the CAS Interdisciplinary Innovation Team Project
文摘Dissolutive wetting, i.e., droplet wetting on dissolvable surfaces, is essential for various natural phenomena and industrial applications such as the formation of sinkholes, enhancing shale gas recovery, drug design, MEMS, and so on. It is difficult to predict the evolution of concentration field and solid-liquid interface owing to the coupled effects of wetting, diffusion, and convection. This study makes substantial progress by proposing a new theory based on Onsager’s variational principle and finding two modes of solute transport, i.e., shifting and lifting modes. Furthermore, we investigate the influence of wetting and dissolution coupling on the interface shape using a phase diagram. Using our theory, we can predict and inversely predict the interface evolution.
